What was found
(CAN) CREW REPORTED SEVERAL STAB AND MACH TRIM CAUTION MESSAGES INTERMITTENT IN CLIMB AND CRUISE. REPLACED THE HSTCU, AIRCRAFT BACK IN SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) CREW REPORTED SEVERAL STAB AND MACH TRIM CAUTION MESSAGES INTERMITTENT IN CLIMB AND CRUISE. REPLACED THE HSTCU, AIRCRAFT BACK IN SERVICE.